Man fails paternity test because of unborn twin’s DNA

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

Man fails paternity test because of unborn twin’s DNA

A 34-year-old Washington man’s unborn twin caused confusion for a couple seeking the results of a paternity test.

The parents, who wish to remain unnamed, went to a fertility clinic and welcomed a healthy baby boy in June 2014. But the problems started when they realized their son didn’t have the same blood type as either parent.

They took an at-home paternity test, which revealed the man wasn’t the child’s father, BuzzFeed reported.

“To our knowledge, this is the first reported case in which paternity was initially excluded by standard DNA testing methods and later included as the result of the analysis of different tissues. This case of chimerism yielding a false exclusion is thought to be unusual,” the study concluded.